Replace sys_common::util::dumb_print with rterr!

library/std/src/alloc.rs

@@ -63,8 +63,6 @@ use core::ptr::NonNull;
 use core::sync::atomic::{AtomicPtr, Ordering};
 use core::{mem, ptr};
 
-use crate::sys_common::util::dumb_print;
-
 #[stable(feature = "alloc_module", since = "1.28.0")]
 #[doc(inline)]
 pub use alloc_crate::alloc::*;
@@ -317,7 +315,7 @@ pub fn take_alloc_error_hook() -> fn(Layout) {
 }
 
 fn default_alloc_error_hook(layout: Layout) {
-    dumb_print(format_args!("memory allocation of {} bytes failed\n", layout.size()));
+    rterr!("memory allocation of {} bytes failed\n", layout.size());
 }
 
 #[cfg(not(test))]

library/std/src/panicking.rs

@@ -20,7 +20,7 @@ use crate::sync::atomic::{AtomicBool, Ordering};
 use crate::sys::stdio::panic_output;
 use crate::sys_common::backtrace::{self, RustBacktrace};
 use crate::sys_common::rwlock::RWLock;
-use crate::sys_common::{thread_info, util};
+use crate::sys_common::thread_info;
 use crate::thread;
 
 #[cfg(not(test))]
@@ -596,15 +596,15 @@ fn rust_panic_with_hook(
         if panics > 2 {
             // Don't try to print the message in this case
             // - perhaps that is causing the recursive panics.
-            util::dumb_print(format_args!("thread panicked while processing panic. aborting.\n"));
+            rterr!("thread panicked while processing panic. aborting.\n");
         } else {
             // Unfortunately, this does not print a backtrace, because creating
             // a `Backtrace` will allocate, which we must to avoid here.
             let panicinfo = PanicInfo::internal_constructor(message, location);
-            util::dumb_print(format_args!(
+            rterr!(
                 "{}\npanicked after panic::always_abort(), aborting.\n",
                 panicinfo
-            ));
+            );
         }
         intrinsics::abort()
     }
@@ -637,7 +637,7 @@ fn rust_panic_with_hook(
         // have limited options. Currently our preference is to
         // just abort. In the future we may consider resuming
         // unwinding or otherwise exiting the thread cleanly.
-        util::dumb_print(format_args!("thread panicked while panicking. aborting.\n"));
+        rterr!("thread panicked while panicking. aborting.\n");
         intrinsics::abort()
     }
 

library/std/src/sys_common/mod.rs

@@ -40,7 +40,6 @@ pub mod thread_info;
 pub mod thread_local_dtor;
 pub mod thread_local_key;
 pub mod thread_parker;
-pub mod util;
 pub mod wtf8;
 
 cfg_if::cfg_if! {

library/std/src/sys_common/util.rs

@@ -1,9 +0,0 @@
-use crate::fmt;
-use crate::io::prelude::*;
-use crate::sys::stdio::panic_output;
-
-pub fn dumb_print(args: fmt::Arguments<'_>) {
-    if let Some(mut out) = panic_output() {
-        let _ = out.write_fmt(args);
-    }
-}